The sternum is a long,flat bone and is vital in the production of red blood cells.
The sternum is a long,flat bone and is vital in the production of red blood cells.
这句话的意思是指这根长且扁的胸骨可以制造红血球吗？
The sternum is a long,flat bone and is vital in the production of red blood cells.
这句话的意思是指这根长且扁的胸骨可以制造红血球吗？